Zend http

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[edit] Uploading a File

You can upload files through HTTP using the setFileUpload method. This method takes a file name as the first parameter, a form name as the second parameter, and data as a third optional parameter. If the third data parameter is null, the first file name parameter is considered to be a real file on disk, and Zend_Http_Client will try to read this file and upload it. If the data parameter is not null, the first file name parameter will be sent as the file name, but no actual file needs to exist on the disk. The second form name parameter is always required, and is equivalent to the "name" attribute of an >input< tag, if the file was to be uploaded through an HTML form. A fourth optional parameter provides the file's content-type. If not specified, and Zend_Http_Client reads the file from the disk, the mime_content_type function will be used to guess the file's content type, if it is available. In any case, the default MIME type will be application/octet-stream.

Using setFileUpload to Upload Files

<?php
    // Uploading arbitrary data as a file
    $text = 'this is some plain text';
    $client->setFileUpload('some_text.txt', 'upload', $text, 'text/plain');

    // Uploading an existing file
    $client->setFileUpload('/tmp/Backup.tar.gz', 'bufile');

    // Send the files
    $client->submit('POST');
?>

In the first example, the $text variable is uploaded and will be available as $_FILES['upload'] on the server side. In the second example, the existing file /tmp/Backup.tar.gz is uploaded to the server and will be available as $_FILES['bufile']. The content type will be guesses automatically if possible - and if not, the content type will be set to 'application/octet-stream'. [Note] Uploading files

When uploading files, the HTTP request content-type is automatically set to multipart/form-data. Keep in mind that you must send a POST or PUT request in order to upload files. Most servers will ignore the requests body on other request methods.

Pasted from: http://framework.zend.com/manual/en/zend.http.client.advanced.html